Yang Hui’s triangle is known to all:
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
In it the ends of each line is 1, and every other number in each line equals to the sum of the two numbers on the shoulders. It’s obvious that it’s a piece of cake (especially with the help of computer)for us to get value of number C in line R, therefore our problem goes to the opposite: given two Continuous numbers in a same line in this "triangle", please find out their positions.
The first line of the input is a N indicating the test cases number.
Then follow N lines. Each line includes two positive integers: a, b, and a, b < 2^31. The number a should be aligned on the left of the number b. It’s certain that for every data input there is always a solution.
For each testing data there will be only one line out: R C. which means number C on line R. What’s more, R and C should be separated by a blank space. For multiple solutions, please print out the solution with the minimum R.